package com.yeyaomai.dksns.flowis.util;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
/**
 * 系统mac地址获取 支持win linux
 * @author zuoshuai@gmail.com
 *
 */
public class SystemMacTool {
	/**
	 * 获取当前操作系统名称. return 操作系统名称 例如:windows xp,linux 等.
	 */
	public static String getOSName() {
		return System.getProperty("os.name").toLowerCase();
	}

	/**
	 * 获取unix网卡的mac地址. 非windows的系统默认调用本方法获取.如果有特殊系统请继续扩充新的取mac地址方法.
	 * 
	 * @return mac地址
	 */
	public static String getUnixMACAddress() {
		String mac = null;
		BufferedReader bufferedReader = null;
		Process process = null;
		try {
			process = Runtime.getRuntime().exec("ifconfig eth0");// linux下的命令，一般取eth0作为本地主网卡
																	// 显示信息中包含有mac地址信息
			bufferedReader = new BufferedReader(new InputStreamReader(
					process.getInputStream()));
			String line = null;
			int index = -1;
			while ((line = bufferedReader.readLine()) != null) {
				index = line.toLowerCase().indexOf("hwaddr");// 寻找标示字符串[hwaddr]
				if (index >= 0) {// 找到了
					mac = line.substring(index + "hwaddr".length() + 1).trim();// 取出mac地址并去除2边空格
					break;
				}
			}
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			try {
				if (bufferedReader != null) {
					bufferedReader.close();
				}
			} catch (IOException e1) {
				e1.printStackTrace();
			}
			bufferedReader = null;
			process = null;
		}

		return mac;
	}

	/**
	 * 获取widnows网卡的mac地址.
	 * 
	 * @return mac地址
	 */
	public static String getWindowsMACAddress() {
		String mac = null;
		BufferedReader bufferedReader = null;
		Process process = null;
		try {
			process = Runtime.getRuntime().exec("ipconfig /all");// windows下的命令，显示信息中包含有mac地址信息
			bufferedReader = new BufferedReader(new InputStreamReader(
					process.getInputStream(), "gbk"));
			String line = null;
			int index = -1;
			int index1 = -1;
			while ((line = bufferedReader.readLine()) != null) {
				// System.out.println(line);
				index = line.toLowerCase().indexOf("physical address");// 寻找标示字符串[physical
																		// address]
				index1 = line.toLowerCase().indexOf("物理地址");// 寻找标示字符串[physical
															// address]
				if (index >= 0 || index1 >= 0) {// 找到了
					index = line.indexOf(":");// 寻找":"的位置
					if (index >= 0) {
						mac = line.substring(index + 1).trim();// 取出mac地址并去除2边空格
					}
					break;
				}
			}
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			try {
				if (bufferedReader != null) {
					bufferedReader.close();
				}
			} catch (IOException e1) {
				e1.printStackTrace();
			}
			bufferedReader = null;
			process = null;
		}

		return mac;
	}

	/**
	 * 测试用的main方法.
	 * 
	 * @param argc
	 *            运行参数.
	 */
	
	public static String getLocalMacAddress(){
		String os = getOSName();
		String mac=null;
		if (os.startsWith("windows")) {
			// 本地是windows
			 mac = getWindowsMACAddress();
		} else {
			// 本地是非windows系统 一般就是unix
			mac = getUnixMACAddress();
		}
		
		return mac;
	}
	public static void main(String[] argc) {
		System.out.println(getLocalMacAddress());
	}
}
